52928809 has 2 divisors, whose sum is σ = 52928810. Its totient is φ = 52928808.

The previous prime is 52928807. The next prime is 52928839. The reversal of 52928809 is 90882925.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35664784 + 17264025 = 5972^2 + 4155^2 .

It is a cyclic number.

It is not a de Polignac number, because 52928809 - 2¹ = 52928807 is a prime.

Together with 52928807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (52928801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26464404 + 26464405.

It is an arithmetic number, because the mean of its divisors is an integer number (26464405).

Almost surely, 2^52928809 is an apocalyptic number.

It is an amenable number.

52928809 is a deficient number, since it is larger than the sum of its proper divisors (1).

52928809 is an equidigital number, since it uses as much as digits as its factorization.

52928809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 52928809 is about 7275.2188283240. The cubic root of 52928809 is about 375.4603153209.

The spelling of 52928809 in words is "fifty-two million, nine hundred twenty-eight thousand, eight hundred nine".